11da177e4SLinus Torvalds /* -*- linux-c -*- 21da177e4SLinus Torvalds * INET 802.1Q VLAN 31da177e4SLinus Torvalds * Ethernet-type device handling. 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * Authors: Ben Greear <greearb@candelatech.com> 6ad712087SPatrick McHardy * Please send support related email to: netdev@vger.kernel.org 71da177e4SLinus Torvalds * VLAN Home Page: http://www.candelatech.com/~greear/vlan.html 81da177e4SLinus Torvalds * 91da177e4SLinus Torvalds * Fixes: Mar 22 2001: Martin Bokaemper <mbokaemper@unispherenetworks.com> 101da177e4SLinus Torvalds * - reset skb->pkt_type on incoming packets when MAC was changed 111da177e4SLinus Torvalds * - see that changed MAC is saddr for outgoing packets 121da177e4SLinus Torvalds * Oct 20, 2001: Ard van Breeman: 131da177e4SLinus Torvalds * - Fix MC-list, finally. 141da177e4SLinus Torvalds * - Flush MC-list on VLAN destroy. 151da177e4SLinus Torvalds * 161da177e4SLinus Torvalds * 171da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or 181da177e4SLinus Torvalds * modify it under the terms of the GNU General Public License 191da177e4SLinus Torvalds * as published by the Free Software Foundation; either version 201da177e4SLinus Torvalds * 2 of the License, or (at your option) any later version. 211da177e4SLinus Torvalds */ 221da177e4SLinus Torvalds 231da177e4SLinus Torvalds #include <linux/module.h> 241da177e4SLinus Torvalds #include <linux/mm.h> 251da177e4SLinus Torvalds #include <linux/in.h> 261da177e4SLinus Torvalds #include <linux/init.h> 271da177e4SLinus Torvalds #include <asm/uaccess.h> /* for copy_from_user */ 281da177e4SLinus Torvalds #include <linux/skbuff.h> 291da177e4SLinus Torvalds #include <linux/netdevice.h> 301da177e4SLinus Torvalds #include <linux/etherdevice.h> 311da177e4SLinus Torvalds #include <net/datalink.h> 321da177e4SLinus Torvalds #include <net/p8022.h> 331da177e4SLinus Torvalds #include <net/arp.h> 341da177e4SLinus Torvalds 351da177e4SLinus Torvalds #include "vlan.h" 361da177e4SLinus Torvalds #include "vlanproc.h" 371da177e4SLinus Torvalds #include <linux/if_vlan.h> 381da177e4SLinus Torvalds #include <net/ip.h> 391da177e4SLinus Torvalds 401da177e4SLinus Torvalds /* 411da177e4SLinus Torvalds * Rebuild the Ethernet MAC header. This is called after an ARP 421da177e4SLinus Torvalds * (or in future other address resolution) has completed on this 431da177e4SLinus Torvalds * sk_buff. We now let ARP fill in the other fields. 441da177e4SLinus Torvalds * 451da177e4SLinus Torvalds * This routine CANNOT use cached dst->neigh! 461da177e4SLinus Torvalds * Really, it is used only when dst->neigh is wrong. 471da177e4SLinus Torvalds * 481da177e4SLinus Torvalds * TODO: This needs a checkup, I'm ignorant here. --BLG 491da177e4SLinus Torvalds */ 50ef3eb3e5SPatrick McHardy static int vlan_dev_rebuild_header(struct sk_buff *skb) 511da177e4SLinus Torvalds { 521da177e4SLinus Torvalds struct net_device *dev = skb->dev; 531da177e4SLinus Torvalds struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); 541da177e4SLinus Torvalds 551da177e4SLinus Torvalds switch (veth->h_vlan_encapsulated_proto) { 561da177e4SLinus Torvalds #ifdef CONFIG_INET 571da177e4SLinus Torvalds case __constant_htons(ETH_P_IP): 581da177e4SLinus Torvalds 591da177e4SLinus Torvalds /* TODO: Confirm this will work with VLAN headers... */ 601da177e4SLinus Torvalds return arp_find(veth->h_dest, skb); 611da177e4SLinus Torvalds #endif 621da177e4SLinus Torvalds default: 6340f98e1aSPatrick McHardy pr_debug("%s: unable to resolve type %X addresses.\n", 64d136fe72SAlexey Dobriyan dev->name, ntohs(veth->h_vlan_encapsulated_proto)); 651da177e4SLinus Torvalds 661da177e4SLinus Torvalds memcpy(veth->h_source, dev->dev_addr, ETH_ALEN); 671da177e4SLinus Torvalds break; 683ff50b79SStephen Hemminger } 691da177e4SLinus Torvalds 701da177e4SLinus Torvalds return 0; 711da177e4SLinus Torvalds } 721da177e4SLinus Torvalds 731da177e4SLinus Torvalds static inline struct sk_buff *vlan_check_reorder_header(struct sk_buff *skb) 741da177e4SLinus Torvalds { 759dfebcc6SPatrick McHardy if (vlan_dev_info(skb->dev)->flags & VLAN_FLAG_REORDER_HDR) { 761da177e4SLinus Torvalds if (skb_shared(skb) || skb_cloned(skb)) { 771da177e4SLinus Torvalds struct sk_buff *nskb = skb_copy(skb, GFP_ATOMIC); 781da177e4SLinus Torvalds kfree_skb(skb); 791da177e4SLinus Torvalds skb = nskb; 801da177e4SLinus Torvalds } 811da177e4SLinus Torvalds if (skb) { 821da177e4SLinus Torvalds /* Lifted from Gleb's VLAN code... */ 831da177e4SLinus Torvalds memmove(skb->data - ETH_HLEN, 841da177e4SLinus Torvalds skb->data - VLAN_ETH_HLEN, 12); 85b0e380b1SArnaldo Carvalho de Melo skb->mac_header += VLAN_HLEN; 861da177e4SLinus Torvalds } 871da177e4SLinus Torvalds } 881da177e4SLinus Torvalds 891da177e4SLinus Torvalds return skb; 901da177e4SLinus Torvalds } 911da177e4SLinus Torvalds 9291b4f954SPavel Emelyanov static inline void vlan_set_encap_proto(struct sk_buff *skb, 9391b4f954SPavel Emelyanov struct vlan_hdr *vhdr) 9491b4f954SPavel Emelyanov { 9591b4f954SPavel Emelyanov __be16 proto; 9691b4f954SPavel Emelyanov unsigned char *rawp; 9791b4f954SPavel Emelyanov 9891b4f954SPavel Emelyanov /* 9991b4f954SPavel Emelyanov * Was a VLAN packet, grab the encapsulated protocol, which the layer 10091b4f954SPavel Emelyanov * three protocols care about. 10191b4f954SPavel Emelyanov */ 10291b4f954SPavel Emelyanov 10391b4f954SPavel Emelyanov proto = vhdr->h_vlan_encapsulated_proto; 10491b4f954SPavel Emelyanov if (ntohs(proto) >= 1536) { 10591b4f954SPavel Emelyanov skb->protocol = proto; 10691b4f954SPavel Emelyanov return; 10791b4f954SPavel Emelyanov } 10891b4f954SPavel Emelyanov 10991b4f954SPavel Emelyanov rawp = skb->data; 11091b4f954SPavel Emelyanov if (*(unsigned short *)rawp == 0xFFFF) 11191b4f954SPavel Emelyanov /* 11291b4f954SPavel Emelyanov * This is a magic hack to spot IPX packets. Older Novell 11391b4f954SPavel Emelyanov * breaks the protocol design and runs IPX over 802.3 without 11491b4f954SPavel Emelyanov * an 802.2 LLC layer. We look for FFFF which isn't a used 11591b4f954SPavel Emelyanov * 802.2 SSAP/DSAP. This won't work for fault tolerant netware 11691b4f954SPavel Emelyanov * but does for the rest. 11791b4f954SPavel Emelyanov */ 11891b4f954SPavel Emelyanov skb->protocol = htons(ETH_P_802_3); 11991b4f954SPavel Emelyanov else 12091b4f954SPavel Emelyanov /* 12191b4f954SPavel Emelyanov * Real 802.2 LLC 12291b4f954SPavel Emelyanov */ 12391b4f954SPavel Emelyanov skb->protocol = htons(ETH_P_802_2); 12491b4f954SPavel Emelyanov } 12591b4f954SPavel Emelyanov 1261da177e4SLinus Torvalds /* 1271da177e4SLinus Torvalds * Determine the packet's protocol ID. The rule here is that we 1281da177e4SLinus Torvalds * assume 802.3 if the type field is short enough to be a length. 1291da177e4SLinus Torvalds * This is normal practice and works for any 'now in use' protocol. 1301da177e4SLinus Torvalds * 1311da177e4SLinus Torvalds * Also, at this point we assume that we ARE dealing exclusively with 1321da177e4SLinus Torvalds * VLAN packets, or packets that should be made into VLAN packets based 1331da177e4SLinus Torvalds * on a default VLAN ID. 1341da177e4SLinus Torvalds * 1351da177e4SLinus Torvalds * NOTE: Should be similar to ethernet/eth.c. 1361da177e4SLinus Torvalds * 1371da177e4SLinus Torvalds * SANITY NOTE: This method is called when a packet is moving up the stack 1381da177e4SLinus Torvalds * towards userland. To get here, it would have already passed 1391da177e4SLinus Torvalds * through the ethernet/eth.c eth_type_trans() method. 1401da177e4SLinus Torvalds * SANITY NOTE 2: We are referencing to the VLAN_HDR frields, which MAY be 1411da177e4SLinus Torvalds * stored UNALIGNED in the memory. RISC systems don't like 1421da177e4SLinus Torvalds * such cases very much... 1432029cc2cSPatrick McHardy * SANITY NOTE 2a: According to Dave Miller & Alexey, it will always be 1442029cc2cSPatrick McHardy * aligned, so there doesn't need to be any of the unaligned 1452029cc2cSPatrick McHardy * stuff. It has been commented out now... --Ben 1461da177e4SLinus Torvalds * 1471da177e4SLinus Torvalds */ 1481da177e4SLinus Torvalds int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev, 149f2ccd8faSDavid S. Miller struct packet_type *ptype, struct net_device *orig_dev) 1501da177e4SLinus Torvalds { 151e7c243c9SEvgeniy Polyakov struct vlan_hdr *vhdr; 1521da177e4SLinus Torvalds unsigned short vid; 1531da177e4SLinus Torvalds struct net_device_stats *stats; 1541da177e4SLinus Torvalds unsigned short vlan_TCI; 1551da177e4SLinus Torvalds 15631ffdbcbSPatrick McHardy if (dev->nd_net != &init_net) 15731ffdbcbSPatrick McHardy goto err_free; 158e730c155SEric W. Biederman 1592029cc2cSPatrick McHardy skb = skb_share_check(skb, GFP_ATOMIC); 1602029cc2cSPatrick McHardy if (skb == NULL) 16131ffdbcbSPatrick McHardy goto err_free; 162e7c243c9SEvgeniy Polyakov 16331ffdbcbSPatrick McHardy if (unlikely(!pskb_may_pull(skb, VLAN_HLEN))) 16431ffdbcbSPatrick McHardy goto err_free; 165e7c243c9SEvgeniy Polyakov 16631ffdbcbSPatrick McHardy vhdr = (struct vlan_hdr *)skb->data; 1671da177e4SLinus Torvalds vlan_TCI = ntohs(vhdr->h_vlan_TCI); 1681da177e4SLinus Torvalds vid = (vlan_TCI & VLAN_VID_MASK); 1691da177e4SLinus Torvalds 1701da177e4SLinus Torvalds rcu_read_lock(); 1711da177e4SLinus Torvalds skb->dev = __find_vlan_dev(dev, vid); 1721da177e4SLinus Torvalds if (!skb->dev) { 1732029cc2cSPatrick McHardy pr_debug("%s: ERROR: No net_device for VID: %u on dev: %s\n", 1742029cc2cSPatrick McHardy __FUNCTION__, (unsigned int)vid, dev->name); 17531ffdbcbSPatrick McHardy goto err_unlock; 1761da177e4SLinus Torvalds } 1771da177e4SLinus Torvalds 1781da177e4SLinus Torvalds skb->dev->last_rx = jiffies; 1791da177e4SLinus Torvalds 1807bd38d77SPatrick McHardy stats = &skb->dev->stats; 1811da177e4SLinus Torvalds stats->rx_packets++; 1821da177e4SLinus Torvalds stats->rx_bytes += skb->len; 1831da177e4SLinus Torvalds 184cbb042f9SHerbert Xu skb_pull_rcsum(skb, VLAN_HLEN); 185a388442cSStephen Hemminger 1862029cc2cSPatrick McHardy skb->priority = vlan_get_ingress_priority(skb->dev, 1872029cc2cSPatrick McHardy ntohs(vhdr->h_vlan_TCI)); 1881da177e4SLinus Torvalds 18940f98e1aSPatrick McHardy pr_debug("%s: priority: %u for TCI: %hu\n", 19040f98e1aSPatrick McHardy __FUNCTION__, skb->priority, ntohs(vhdr->h_vlan_TCI)); 1911da177e4SLinus Torvalds 1921da177e4SLinus Torvalds switch (skb->pkt_type) { 1931da177e4SLinus Torvalds case PACKET_BROADCAST: /* Yeah, stats collect these together.. */ 1942029cc2cSPatrick McHardy /* stats->broadcast ++; // no such counter :-( */ 1951da177e4SLinus Torvalds break; 1961da177e4SLinus Torvalds 1971da177e4SLinus Torvalds case PACKET_MULTICAST: 1981da177e4SLinus Torvalds stats->multicast++; 1991da177e4SLinus Torvalds break; 2001da177e4SLinus Torvalds 2011da177e4SLinus Torvalds case PACKET_OTHERHOST: 2021da177e4SLinus Torvalds /* Our lower layer thinks this is not local, let's make sure. 2032029cc2cSPatrick McHardy * This allows the VLAN to have a different MAC than the 2042029cc2cSPatrick McHardy * underlying device, and still route correctly. 2051da177e4SLinus Torvalds */ 2062029cc2cSPatrick McHardy if (!compare_ether_addr(eth_hdr(skb)->h_dest, 2072029cc2cSPatrick McHardy skb->dev->dev_addr)) 2081da177e4SLinus Torvalds skb->pkt_type = PACKET_HOST; 2091da177e4SLinus Torvalds break; 2101da177e4SLinus Torvalds default: 2111da177e4SLinus Torvalds break; 2123ff50b79SStephen Hemminger } 2131da177e4SLinus Torvalds 21491b4f954SPavel Emelyanov vlan_set_encap_proto(skb, vhdr); 2151da177e4SLinus Torvalds 2161da177e4SLinus Torvalds skb = vlan_check_reorder_header(skb); 21731ffdbcbSPatrick McHardy if (!skb) { 2181da177e4SLinus Torvalds stats->rx_errors++; 21931ffdbcbSPatrick McHardy goto err_unlock; 2201da177e4SLinus Torvalds } 22131ffdbcbSPatrick McHardy 22231ffdbcbSPatrick McHardy netif_rx(skb); 2231da177e4SLinus Torvalds rcu_read_unlock(); 22431ffdbcbSPatrick McHardy return NET_RX_SUCCESS; 22531ffdbcbSPatrick McHardy 22631ffdbcbSPatrick McHardy err_unlock: 22731ffdbcbSPatrick McHardy rcu_read_unlock(); 22831ffdbcbSPatrick McHardy err_free: 22931ffdbcbSPatrick McHardy kfree_skb(skb); 23031ffdbcbSPatrick McHardy return NET_RX_DROP; 2311da177e4SLinus Torvalds } 2321da177e4SLinus Torvalds 2332029cc2cSPatrick McHardy static inline unsigned short 2342029cc2cSPatrick McHardy vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb) 2351da177e4SLinus Torvalds { 2362029cc2cSPatrick McHardy struct vlan_priority_tci_mapping *mp; 2371da177e4SLinus Torvalds 2382029cc2cSPatrick McHardy mp = vlan_dev_info(dev)->egress_priority_map[(skb->priority & 0xF)]; 2391da177e4SLinus Torvalds while (mp) { 2401da177e4SLinus Torvalds if (mp->priority == skb->priority) { 2412029cc2cSPatrick McHardy return mp->vlan_qos; /* This should already be shifted 2422029cc2cSPatrick McHardy * to mask correctly with the 2432029cc2cSPatrick McHardy * VLAN's TCI */ 2441da177e4SLinus Torvalds } 2451da177e4SLinus Torvalds mp = mp->next; 2461da177e4SLinus Torvalds } 2471da177e4SLinus Torvalds return 0; 2481da177e4SLinus Torvalds } 2491da177e4SLinus Torvalds 2501da177e4SLinus Torvalds /* 2511da177e4SLinus Torvalds * Create the VLAN header for an arbitrary protocol layer 2521da177e4SLinus Torvalds * 2531da177e4SLinus Torvalds * saddr=NULL means use device source address 2541da177e4SLinus Torvalds * daddr=NULL means leave destination address (eg unresolved arp) 2551da177e4SLinus Torvalds * 2561da177e4SLinus Torvalds * This is called when the SKB is moving down the stack towards the 2571da177e4SLinus Torvalds * physical devices. 2581da177e4SLinus Torvalds */ 259ef3eb3e5SPatrick McHardy static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, 2603b04dddeSStephen Hemminger unsigned short type, 261ef3eb3e5SPatrick McHardy const void *daddr, const void *saddr, 262ef3eb3e5SPatrick McHardy unsigned int len) 2631da177e4SLinus Torvalds { 2641da177e4SLinus Torvalds struct vlan_hdr *vhdr; 2651da177e4SLinus Torvalds unsigned short veth_TCI = 0; 2661da177e4SLinus Torvalds int rc = 0; 2671da177e4SLinus Torvalds int build_vlan_header = 0; 2682029cc2cSPatrick McHardy struct net_device *vdev = dev; 2691da177e4SLinus Torvalds 27040f98e1aSPatrick McHardy pr_debug("%s: skb: %p type: %hx len: %u vlan_id: %hx, daddr: %p\n", 2712029cc2cSPatrick McHardy __FUNCTION__, skb, type, len, vlan_dev_info(dev)->vlan_id, 2722029cc2cSPatrick McHardy daddr); 2731da177e4SLinus Torvalds 2741da177e4SLinus Torvalds /* build vlan header only if re_order_header flag is NOT set. This 2751da177e4SLinus Torvalds * fixes some programs that get confused when they see a VLAN device 2761da177e4SLinus Torvalds * sending a frame that is VLAN encoded (the consensus is that the VLAN 2771da177e4SLinus Torvalds * device should look completely like an Ethernet device when the 2781da177e4SLinus Torvalds * REORDER_HEADER flag is set) The drawback to this is some extra 2791da177e4SLinus Torvalds * header shuffling in the hard_start_xmit. Users can turn off this 2801da177e4SLinus Torvalds * REORDER behaviour with the vconfig tool. 2811da177e4SLinus Torvalds */ 2829dfebcc6SPatrick McHardy if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) 283a4bf3af4SPatrick McHardy build_vlan_header = 1; 2841da177e4SLinus Torvalds 2851da177e4SLinus Torvalds if (build_vlan_header) { 2861da177e4SLinus Torvalds vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN); 2871da177e4SLinus Torvalds 2881da177e4SLinus Torvalds /* build the four bytes that make this a VLAN header. */ 2891da177e4SLinus Torvalds 2902029cc2cSPatrick McHardy /* Now, construct the second two bytes. This field looks 2912029cc2cSPatrick McHardy * something like: 2921da177e4SLinus Torvalds * usr_priority: 3 bits (high bits) 2931da177e4SLinus Torvalds * CFI 1 bit 2941da177e4SLinus Torvalds * VLAN ID 12 bits (low bits) 2951da177e4SLinus Torvalds * 2961da177e4SLinus Torvalds */ 2979dfebcc6SPatrick McHardy veth_TCI = vlan_dev_info(dev)->vlan_id; 2981da177e4SLinus Torvalds veth_TCI |= vlan_dev_get_egress_qos_mask(dev, skb); 2991da177e4SLinus Torvalds 3001da177e4SLinus Torvalds vhdr->h_vlan_TCI = htons(veth_TCI); 3011da177e4SLinus Torvalds 3021da177e4SLinus Torvalds /* 3032029cc2cSPatrick McHardy * Set the protocol type. For a packet of type ETH_P_802_3 we 3042029cc2cSPatrick McHardy * put the length in here instead. It is up to the 802.2 3052029cc2cSPatrick McHardy * layer to carry protocol information. 3061da177e4SLinus Torvalds */ 3071da177e4SLinus Torvalds 3082029cc2cSPatrick McHardy if (type != ETH_P_802_3) 3091da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(type); 3102029cc2cSPatrick McHardy else 3111da177e4SLinus Torvalds vhdr->h_vlan_encapsulated_proto = htons(len); 312279e172aSJerome Borsboom 313279e172aSJerome Borsboom skb->protocol = htons(ETH_P_8021Q); 314be8bd863SDavid S. Miller skb_reset_network_header(skb); 3151da177e4SLinus Torvalds } 3161da177e4SLinus Torvalds 3171da177e4SLinus Torvalds /* Before delegating work to the lower layer, enter our MAC-address */ 3181da177e4SLinus Torvalds if (saddr == NULL) 3191da177e4SLinus Torvalds saddr = dev->dev_addr; 3201da177e4SLinus Torvalds 3219dfebcc6SPatrick McHardy dev = vlan_dev_info(dev)->real_dev; 3221da177e4SLinus Torvalds 3232029cc2cSPatrick McHardy /* MPLS can send us skbuffs w/out enough space. This check will grow 3242029cc2cSPatrick McHardy * the skb if it doesn't have enough headroom. Not a beautiful solution, 3252029cc2cSPatrick McHardy * so I'll tick a counter so that users can know it's happening... 3262029cc2cSPatrick McHardy * If they care... 3271da177e4SLinus Torvalds */ 3281da177e4SLinus Torvalds 3291da177e4SLinus Torvalds /* NOTE: This may still break if the underlying device is not the final 3301da177e4SLinus Torvalds * device (and thus there are more headers to add...) It should work for 3311da177e4SLinus Torvalds * good-ole-ethernet though. 3321da177e4SLinus Torvalds */ 3331da177e4SLinus Torvalds if (skb_headroom(skb) < dev->hard_header_len) { 3341da177e4SLinus Torvalds struct sk_buff *sk_tmp = skb; 3351da177e4SLinus Torvalds skb = skb_realloc_headroom(sk_tmp, dev->hard_header_len); 3361da177e4SLinus Torvalds kfree_skb(sk_tmp); 3371da177e4SLinus Torvalds if (skb == NULL) { 3387bd38d77SPatrick McHardy struct net_device_stats *stats = &vdev->stats; 3391da177e4SLinus Torvalds stats->tx_dropped++; 3401da177e4SLinus Torvalds return -ENOMEM; 3411da177e4SLinus Torvalds } 3429dfebcc6SPatrick McHardy vlan_dev_info(vdev)->cnt_inc_headroom_on_tx++; 3432029cc2cSPatrick McHardy pr_debug("%s: %s: had to grow skb\n", __FUNCTION__, vdev->name); 3441da177e4SLinus Torvalds } 3451da177e4SLinus Torvalds 3461da177e4SLinus Torvalds if (build_vlan_header) { 3471da177e4SLinus Torvalds /* Now make the underlying real hard header */ 3480c4e8581SStephen Hemminger rc = dev_hard_header(skb, dev, ETH_P_8021Q, daddr, saddr, 3490c4e8581SStephen Hemminger len + VLAN_HLEN); 3500c4e8581SStephen Hemminger if (rc > 0) 3511da177e4SLinus Torvalds rc += VLAN_HLEN; 3520c4e8581SStephen Hemminger else if (rc < 0) 3531da177e4SLinus Torvalds rc -= VLAN_HLEN; 3540c4e8581SStephen Hemminger } else 3552029cc2cSPatrick McHardy /* If here, then we'll just make a normal looking ethernet 3562029cc2cSPatrick McHardy * frame, but, the hard_start_xmit method will insert the tag 3572029cc2cSPatrick McHardy * (it has to be able to do this for bridged and other skbs 3582029cc2cSPatrick McHardy * that don't come down the protocol stack in an orderly manner. 3591da177e4SLinus Torvalds */ 3600c4e8581SStephen Hemminger rc = dev_hard_header(skb, dev, type, daddr, saddr, len); 3611da177e4SLinus Torvalds 3621da177e4SLinus Torvalds return rc; 3631da177e4SLinus Torvalds } 3641da177e4SLinus Torvalds 365ef3eb3e5SPatrick McHardy static int vlan_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) 3661da177e4SLinus Torvalds { 3677bd38d77SPatrick McHardy struct net_device_stats *stats = &dev->stats; 3681da177e4SLinus Torvalds struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); 36955b01e86SDavid S. Miller 3701da177e4SLinus Torvalds /* Handle non-VLAN frames if they are sent to us, for example by DHCP. 3711da177e4SLinus Torvalds * 3721da177e4SLinus Torvalds * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING 3731da177e4SLinus Torvalds * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs... 3741da177e4SLinus Torvalds */ 3751da177e4SLinus Torvalds 3766ab3b487SJoonwoo Park if (veth->h_vlan_proto != htons(ETH_P_8021Q) || 3779dfebcc6SPatrick McHardy vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) { 3781da177e4SLinus Torvalds int orig_headroom = skb_headroom(skb); 3791da177e4SLinus Torvalds unsigned short veth_TCI; 3801da177e4SLinus Torvalds 3811da177e4SLinus Torvalds /* This is not a VLAN frame...but we can fix that! */ 3829dfebcc6SPatrick McHardy vlan_dev_info(dev)->cnt_encap_on_xmit++; 3831da177e4SLinus Torvalds 38440f98e1aSPatrick McHardy pr_debug("%s: proto to encap: 0x%hx\n", 3859534f035SAl Viro __FUNCTION__, ntohs(veth->h_vlan_proto)); 3861da177e4SLinus Torvalds /* Construct the second two bytes. This field looks something 3871da177e4SLinus Torvalds * like: 3881da177e4SLinus Torvalds * usr_priority: 3 bits (high bits) 3891da177e4SLinus Torvalds * CFI 1 bit 3901da177e4SLinus Torvalds * VLAN ID 12 bits (low bits) 3911da177e4SLinus Torvalds */ 3929dfebcc6SPatrick McHardy veth_TCI = vlan_dev_info(dev)->vlan_id; 3931da177e4SLinus Torvalds veth_TCI |= vlan_dev_get_egress_qos_mask(dev, skb); 3941da177e4SLinus Torvalds 3951da177e4SLinus Torvalds skb = __vlan_put_tag(skb, veth_TCI); 3961da177e4SLinus Torvalds if (!skb) { 3971da177e4SLinus Torvalds stats->tx_dropped++; 3981da177e4SLinus Torvalds return 0; 3991da177e4SLinus Torvalds } 4001da177e4SLinus Torvalds 4012029cc2cSPatrick McHardy if (orig_headroom < VLAN_HLEN) 4029dfebcc6SPatrick McHardy vlan_dev_info(dev)->cnt_inc_headroom_on_tx++; 4031da177e4SLinus Torvalds } 4041da177e4SLinus Torvalds 40540f98e1aSPatrick McHardy pr_debug("%s: about to send skb: %p to dev: %s\n", 4061da177e4SLinus Torvalds __FUNCTION__, skb, skb->dev->name); 40755b01e86SDavid S. Miller pr_debug(" " MAC_FMT " " MAC_FMT " %4hx %4hx %4hx\n", 40855b01e86SDavid S. Miller veth->h_dest[0], veth->h_dest[1], veth->h_dest[2], 40955b01e86SDavid S. Miller veth->h_dest[3], veth->h_dest[4], veth->h_dest[5], 41055b01e86SDavid S. Miller veth->h_source[0], veth->h_source[1], veth->h_source[2], 41155b01e86SDavid S. Miller veth->h_source[3], veth->h_source[4], veth->h_source[5], 41240f98e1aSPatrick McHardy veth->h_vlan_proto, veth->h_vlan_TCI, 41340f98e1aSPatrick McHardy veth->h_vlan_encapsulated_proto); 4141da177e4SLinus Torvalds 4151da177e4SLinus Torvalds stats->tx_packets++; /* for statics only */ 4161da177e4SLinus Torvalds stats->tx_bytes += skb->len; 4171da177e4SLinus Torvalds 4189dfebcc6SPatrick McHardy skb->dev = vlan_dev_info(dev)->real_dev; 4191da177e4SLinus Torvalds dev_queue_xmit(skb); 4201da177e4SLinus Torvalds 4211da177e4SLinus Torvalds return 0; 4221da177e4SLinus Torvalds } 4231da177e4SLinus Torvalds 424ef3eb3e5SPatrick McHardy static int vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb, 425ef3eb3e5SPatrick McHardy struct net_device *dev) 4261da177e4SLinus Torvalds { 4277bd38d77SPatrick McHardy struct net_device_stats *stats = &dev->stats; 4281da177e4SLinus Torvalds unsigned short veth_TCI; 4291da177e4SLinus Torvalds 4301da177e4SLinus Torvalds /* Construct the second two bytes. This field looks something 4311da177e4SLinus Torvalds * like: 4321da177e4SLinus Torvalds * usr_priority: 3 bits (high bits) 4331da177e4SLinus Torvalds * CFI 1 bit 4341da177e4SLinus Torvalds * VLAN ID 12 bits (low bits) 4351da177e4SLinus Torvalds */ 4369dfebcc6SPatrick McHardy veth_TCI = vlan_dev_info(dev)->vlan_id; 4371da177e4SLinus Torvalds veth_TCI |= vlan_dev_get_egress_qos_mask(dev, skb); 4381da177e4SLinus Torvalds skb = __vlan_hwaccel_put_tag(skb, veth_TCI); 4391da177e4SLinus Torvalds 4401da177e4SLinus Torvalds stats->tx_packets++; 4411da177e4SLinus Torvalds stats->tx_bytes += skb->len; 4421da177e4SLinus Torvalds 4439dfebcc6SPatrick McHardy skb->dev = vlan_dev_info(dev)->real_dev; 4441da177e4SLinus Torvalds dev_queue_xmit(skb); 4451da177e4SLinus Torvalds 4461da177e4SLinus Torvalds return 0; 4471da177e4SLinus Torvalds } 4481da177e4SLinus Torvalds 449ef3eb3e5SPatrick McHardy static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) 4501da177e4SLinus Torvalds { 4511da177e4SLinus Torvalds /* TODO: gotta make sure the underlying layer can handle it, 4521da177e4SLinus Torvalds * maybe an IFF_VLAN_CAPABLE flag for devices? 4531da177e4SLinus Torvalds */ 4549dfebcc6SPatrick McHardy if (vlan_dev_info(dev)->real_dev->mtu < new_mtu) 4551da177e4SLinus Torvalds return -ERANGE; 4561da177e4SLinus Torvalds 4571da177e4SLinus Torvalds dev->mtu = new_mtu; 4581da177e4SLinus Torvalds 4591da177e4SLinus Torvalds return 0; 4601da177e4SLinus Torvalds } 4611da177e4SLinus Torvalds 462c17d8874SPatrick McHardy void vlan_dev_set_ingress_priority(const struct net_device *dev, 463c17d8874SPatrick McHardy u32 skb_prio, short vlan_prio) 4641da177e4SLinus Torvalds { 4659dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 466b020cb48SPatrick McHardy 467b020cb48SPatrick McHardy if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio) 468b020cb48SPatrick McHardy vlan->nr_ingress_mappings--; 469b020cb48SPatrick McHardy else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio) 470b020cb48SPatrick McHardy vlan->nr_ingress_mappings++; 471b020cb48SPatrick McHardy 472b020cb48SPatrick McHardy vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio; 4731da177e4SLinus Torvalds } 4741da177e4SLinus Torvalds 475c17d8874SPatrick McHardy int vlan_dev_set_egress_priority(const struct net_device *dev, 476c17d8874SPatrick McHardy u32 skb_prio, short vlan_prio) 4771da177e4SLinus Torvalds { 4789dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 4791da177e4SLinus Torvalds struct vlan_priority_tci_mapping *mp = NULL; 4801da177e4SLinus Torvalds struct vlan_priority_tci_mapping *np; 481b020cb48SPatrick McHardy u32 vlan_qos = (vlan_prio << 13) & 0xE000; 4821da177e4SLinus Torvalds 4831da177e4SLinus Torvalds /* See if a priority mapping exists.. */ 484b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 4851da177e4SLinus Torvalds while (mp) { 4861da177e4SLinus Torvalds if (mp->priority == skb_prio) { 487b020cb48SPatrick McHardy if (mp->vlan_qos && !vlan_qos) 488b020cb48SPatrick McHardy vlan->nr_egress_mappings--; 489b020cb48SPatrick McHardy else if (!mp->vlan_qos && vlan_qos) 490b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 491b020cb48SPatrick McHardy mp->vlan_qos = vlan_qos; 4921da177e4SLinus Torvalds return 0; 4931da177e4SLinus Torvalds } 4941da177e4SLinus Torvalds mp = mp->next; 4951da177e4SLinus Torvalds } 4961da177e4SLinus Torvalds 4971da177e4SLinus Torvalds /* Create a new mapping then. */ 498b020cb48SPatrick McHardy mp = vlan->egress_priority_map[skb_prio & 0xF]; 4991da177e4SLinus Torvalds np = kmalloc(sizeof(struct vlan_priority_tci_mapping), GFP_KERNEL); 500c17d8874SPatrick McHardy if (!np) 501c17d8874SPatrick McHardy return -ENOBUFS; 502c17d8874SPatrick McHardy 5031da177e4SLinus Torvalds np->next = mp; 5041da177e4SLinus Torvalds np->priority = skb_prio; 505b020cb48SPatrick McHardy np->vlan_qos = vlan_qos; 506b020cb48SPatrick McHardy vlan->egress_priority_map[skb_prio & 0xF] = np; 507b020cb48SPatrick McHardy if (vlan_qos) 508b020cb48SPatrick McHardy vlan->nr_egress_mappings++; 5091da177e4SLinus Torvalds return 0; 5101da177e4SLinus Torvalds } 5111da177e4SLinus Torvalds 512a4bf3af4SPatrick McHardy /* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */ 513c17d8874SPatrick McHardy int vlan_dev_set_vlan_flag(const struct net_device *dev, 514c17d8874SPatrick McHardy u32 flag, short flag_val) 5151da177e4SLinus Torvalds { 5161da177e4SLinus Torvalds /* verify flag is supported */ 517a4bf3af4SPatrick McHardy if (flag == VLAN_FLAG_REORDER_HDR) { 5182029cc2cSPatrick McHardy if (flag_val) 5199dfebcc6SPatrick McHardy vlan_dev_info(dev)->flags |= VLAN_FLAG_REORDER_HDR; 5202029cc2cSPatrick McHardy else 5219dfebcc6SPatrick McHardy vlan_dev_info(dev)->flags &= ~VLAN_FLAG_REORDER_HDR; 5221da177e4SLinus Torvalds return 0; 5231da177e4SLinus Torvalds } 5241da177e4SLinus Torvalds return -EINVAL; 5251da177e4SLinus Torvalds } 5261da177e4SLinus Torvalds 527c17d8874SPatrick McHardy void vlan_dev_get_realdev_name(const struct net_device *dev, char *result) 5281da177e4SLinus Torvalds { 5299dfebcc6SPatrick McHardy strncpy(result, vlan_dev_info(dev)->real_dev->name, 23); 5301da177e4SLinus Torvalds } 5311da177e4SLinus Torvalds 532c17d8874SPatrick McHardy void vlan_dev_get_vid(const struct net_device *dev, unsigned short *result) 5331da177e4SLinus Torvalds { 5349dfebcc6SPatrick McHardy *result = vlan_dev_info(dev)->vlan_id; 5351da177e4SLinus Torvalds } 5361da177e4SLinus Torvalds 537ef3eb3e5SPatrick McHardy static int vlan_dev_open(struct net_device *dev) 5381da177e4SLinus Torvalds { 5399dfebcc6SPatrick McHardy struct vlan_dev_info *vlan = vlan_dev_info(dev); 5408c979c26SPatrick McHardy struct net_device *real_dev = vlan->real_dev; 5418c979c26SPatrick McHardy int err; 5428c979c26SPatrick McHardy 5438c979c26SPatrick McHardy if (!(real_dev->flags & IFF_UP)) 5441da177e4SLinus Torvalds return -ENETDOWN; 5451da177e4SLinus Torvalds 5468c979c26SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) { 5478c979c26SPatrick McHardy err = dev_unicast_add(real_dev, dev->dev_addr, ETH_ALEN); 5488c979c26SPatrick McHardy if (err < 0) 5498c979c26SPatrick McHardy return err; 5508c979c26SPatrick McHardy } 5518c979c26SPatrick McHardy memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN); 5528c979c26SPatrick McHardy 5536c78dcbdSPatrick McHardy if (dev->flags & IFF_ALLMULTI) 5546c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, 1); 5556c78dcbdSPatrick McHardy if (dev->flags & IFF_PROMISC) 5566c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, 1); 5576c78dcbdSPatrick McHardy 5581da177e4SLinus Torvalds return 0; 5591da177e4SLinus Torvalds } 5601da177e4SLinus Torvalds 561ef3eb3e5SPatrick McHardy static int vlan_dev_stop(struct net_device *dev) 5621da177e4SLinus Torvalds { 5639dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 5648c979c26SPatrick McHardy 56556addd6eSPatrick McHardy dev_mc_unsync(real_dev, dev); 566e83a2ea8SChris Leech dev_unicast_unsync(real_dev, dev); 5676c78dcbdSPatrick McHardy if (dev->flags & IFF_ALLMULTI) 5686c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, -1); 5696c78dcbdSPatrick McHardy if (dev->flags & IFF_PROMISC) 5706c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, -1); 5716c78dcbdSPatrick McHardy 5728c979c26SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 5738c979c26SPatrick McHardy dev_unicast_delete(real_dev, dev->dev_addr, dev->addr_len); 5748c979c26SPatrick McHardy 5751da177e4SLinus Torvalds return 0; 5761da177e4SLinus Torvalds } 5771da177e4SLinus Torvalds 578ef3eb3e5SPatrick McHardy static int vlan_dev_set_mac_address(struct net_device *dev, void *p) 57939aaac11SPatrick McHardy { 5809dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 58139aaac11SPatrick McHardy struct sockaddr *addr = p; 58239aaac11SPatrick McHardy int err; 58339aaac11SPatrick McHardy 58439aaac11SPatrick McHardy if (!is_valid_ether_addr(addr->sa_data)) 58539aaac11SPatrick McHardy return -EADDRNOTAVAIL; 58639aaac11SPatrick McHardy 58739aaac11SPatrick McHardy if (!(dev->flags & IFF_UP)) 58839aaac11SPatrick McHardy goto out; 58939aaac11SPatrick McHardy 59039aaac11SPatrick McHardy if (compare_ether_addr(addr->sa_data, real_dev->dev_addr)) { 59139aaac11SPatrick McHardy err = dev_unicast_add(real_dev, addr->sa_data, ETH_ALEN); 59239aaac11SPatrick McHardy if (err < 0) 59339aaac11SPatrick McHardy return err; 59439aaac11SPatrick McHardy } 59539aaac11SPatrick McHardy 59639aaac11SPatrick McHardy if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) 59739aaac11SPatrick McHardy dev_unicast_delete(real_dev, dev->dev_addr, ETH_ALEN); 59839aaac11SPatrick McHardy 59939aaac11SPatrick McHardy out: 60039aaac11SPatrick McHardy memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 60139aaac11SPatrick McHardy return 0; 60239aaac11SPatrick McHardy } 60339aaac11SPatrick McHardy 604ef3eb3e5SPatrick McHardy static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 6051da177e4SLinus Torvalds { 6069dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 6071da177e4SLinus Torvalds struct ifreq ifrr; 6081da177e4SLinus Torvalds int err = -EOPNOTSUPP; 6091da177e4SLinus Torvalds 6101da177e4SLinus Torvalds strncpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); 6111da177e4SLinus Torvalds ifrr.ifr_ifru = ifr->ifr_ifru; 6121da177e4SLinus Torvalds 6131da177e4SLinus Torvalds switch (cmd) { 6141da177e4SLinus Torvalds case SIOCGMIIPHY: 6151da177e4SLinus Torvalds case SIOCGMIIREG: 6161da177e4SLinus Torvalds case SIOCSMIIREG: 6171da177e4SLinus Torvalds if (real_dev->do_ioctl && netif_device_present(real_dev)) 6181da177e4SLinus Torvalds err = real_dev->do_ioctl(real_dev, &ifrr, cmd); 6191da177e4SLinus Torvalds break; 6201da177e4SLinus Torvalds } 6211da177e4SLinus Torvalds 6221da177e4SLinus Torvalds if (!err) 6231da177e4SLinus Torvalds ifr->ifr_ifru = ifrr.ifr_ifru; 6241da177e4SLinus Torvalds 6251da177e4SLinus Torvalds return err; 6261da177e4SLinus Torvalds } 6271da177e4SLinus Torvalds 628ef3eb3e5SPatrick McHardy static void vlan_dev_change_rx_flags(struct net_device *dev, int change) 6296c78dcbdSPatrick McHardy { 6309dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 6316c78dcbdSPatrick McHardy 6326c78dcbdSPatrick McHardy if (change & IFF_ALLMULTI) 6336c78dcbdSPatrick McHardy dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1); 6346c78dcbdSPatrick McHardy if (change & IFF_PROMISC) 6356c78dcbdSPatrick McHardy dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1); 6366c78dcbdSPatrick McHardy } 6376c78dcbdSPatrick McHardy 638e83a2ea8SChris Leech static void vlan_dev_set_rx_mode(struct net_device *vlan_dev) 6391da177e4SLinus Torvalds { 6409dfebcc6SPatrick McHardy dev_mc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); 641e83a2ea8SChris Leech dev_unicast_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev); 6421da177e4SLinus Torvalds } 643ef3eb3e5SPatrick McHardy 644ef3eb3e5SPatrick McHardy /* 645ef3eb3e5SPatrick McHardy * vlan network devices have devices nesting below it, and are a special 646ef3eb3e5SPatrick McHardy * "super class" of normal network devices; split their locks off into a 647ef3eb3e5SPatrick McHardy * separate class since they always nest. 648ef3eb3e5SPatrick McHardy */ 649ef3eb3e5SPatrick McHardy static struct lock_class_key vlan_netdev_xmit_lock_key; 650ef3eb3e5SPatrick McHardy 651ef3eb3e5SPatrick McHardy static const struct header_ops vlan_header_ops = { 652ef3eb3e5SPatrick McHardy .create = vlan_dev_hard_header, 653ef3eb3e5SPatrick McHardy .rebuild = vlan_dev_rebuild_header, 654ef3eb3e5SPatrick McHardy .parse = eth_header_parse, 655ef3eb3e5SPatrick McHardy }; 656ef3eb3e5SPatrick McHardy 657ef3eb3e5SPatrick McHardy static int vlan_dev_init(struct net_device *dev) 658ef3eb3e5SPatrick McHardy { 6599dfebcc6SPatrick McHardy struct net_device *real_dev = vlan_dev_info(dev)->real_dev; 660ef3eb3e5SPatrick McHardy int subclass = 0; 661ef3eb3e5SPatrick McHardy 662ef3eb3e5SPatrick McHardy /* IFF_BROADCAST|IFF_MULTICAST; ??? */ 6630ed21b32SPatrick McHardy dev->flags = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI); 664ef3eb3e5SPatrick McHardy dev->iflink = real_dev->ifindex; 665ef3eb3e5SPatrick McHardy dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) | 666ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_DORMANT))) | 667ef3eb3e5SPatrick McHardy (1<<__LINK_STATE_PRESENT); 668ef3eb3e5SPatrick McHardy 669ef3eb3e5SPatrick McHardy /* ipv6 shared card related stuff */ 670ef3eb3e5SPatrick McHardy dev->dev_id = real_dev->dev_id; 671ef3eb3e5SPatrick McHardy 672ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->dev_addr)) 673ef3eb3e5SPatrick McHardy memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len); 674ef3eb3e5SPatrick McHardy if (is_zero_ether_addr(dev->broadcast)) 675ef3eb3e5SPatrick McHardy memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); 676ef3eb3e5SPatrick McHardy 677ef3eb3e5SPatrick McHardy if (real_dev->features & NETIF_F_HW_VLAN_TX) { 678ef3eb3e5SPatrick McHardy dev->header_ops = real_dev->header_ops; 679ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len; 680ef3eb3e5SPatrick McHardy dev->hard_start_xmit = vlan_dev_hwaccel_hard_start_xmit; 681ef3eb3e5SPatrick McHardy } else { 682ef3eb3e5SPatrick McHardy dev->header_ops = &vlan_header_ops; 683ef3eb3e5SPatrick McHardy dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; 684ef3eb3e5SPatrick McHardy dev->hard_start_xmit = vlan_dev_hard_start_xmit; 685ef3eb3e5SPatrick McHardy } 686ef3eb3e5SPatrick McHardy 687ef3eb3e5SPatrick McHardy if (real_dev->priv_flags & IFF_802_1Q_VLAN) 688ef3eb3e5SPatrick McHardy subclass = 1; 689ef3eb3e5SPatrick McHardy 690ef3eb3e5SPatrick McHardy lockdep_set_class_and_subclass(&dev->_xmit_lock, 691ef3eb3e5SPatrick McHardy &vlan_netdev_xmit_lock_key, subclass); 692ef3eb3e5SPatrick McHardy return 0; 693ef3eb3e5SPatrick McHardy } 694ef3eb3e5SPatrick McHardy 695ef3eb3e5SPatrick McHardy void vlan_setup(struct net_device *dev) 696ef3eb3e5SPatrick McHardy { 697ef3eb3e5SPatrick McHardy ether_setup(dev); 698ef3eb3e5SPatrick McHardy 699ef3eb3e5SPatrick McHardy dev->priv_flags |= IFF_802_1Q_VLAN; 700ef3eb3e5SPatrick McHardy dev->tx_queue_len = 0; 701ef3eb3e5SPatrick McHardy 702ef3eb3e5SPatrick McHardy dev->change_mtu = vlan_dev_change_mtu; 703ef3eb3e5SPatrick McHardy dev->init = vlan_dev_init; 704ef3eb3e5SPatrick McHardy dev->open = vlan_dev_open; 705ef3eb3e5SPatrick McHardy dev->stop = vlan_dev_stop; 706ef3eb3e5SPatrick McHardy dev->set_mac_address = vlan_dev_set_mac_address; 707e83a2ea8SChris Leech dev->set_rx_mode = vlan_dev_set_rx_mode; 708e83a2ea8SChris Leech dev->set_multicast_list = vlan_dev_set_rx_mode; 709ef3eb3e5SPatrick McHardy dev->change_rx_flags = vlan_dev_change_rx_flags; 710ef3eb3e5SPatrick McHardy dev->do_ioctl = vlan_dev_ioctl; 711ef3eb3e5SPatrick McHardy dev->destructor = free_netdev; 712ef3eb3e5SPatrick McHardy 713ef3eb3e5SPatrick McHardy memset(dev->broadcast, 0, ETH_ALEN); 714ef3eb3e5SPatrick McHardy } 715